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No. 6|8,385. Patented lan. 24, |899.

C. W. BOMAN.

FUUNTAIN PEN.

(Abpuvacion med Nov. 11, 199s.)

(No Model.)

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NITED STATES PATENT rricn.

CLAES XVM. BOMAN, OF NEW YORK, N. Y., ASSIGNOR TO THE EAGLE PENCILCOMPANY, OF SAME PLACE.

FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 618,385, dated January24, 1899.

Application led November 11, 1898. Serial No. 696,117. (No model.)

T all whom, it may concern:

Be it known that I, CLAES WVM. BOMAN, a citizen of the United States,and a resident of the city of New York, in the county and State of NewYork, have invented a new and useful Improvement inFountain-Pens, ofwhich the following is a specification.

This invention relates to fountain=pens,and has particular reference tothe device by which the ink is conducted from the reservoir and suppliedto the pen.

The device consists of a plug composed, essentially, of a tube and atongue having that portion of its length which fits within the tubesubstantially triangular in cross-section, so as to provide between itand the adjoining walls of the tube three passages or channels for thepassage of ink from and air to the reservoir. One of these passagescommunicates through a slot in the top of the tongue with the under sideof the pen, which lies upon and in contact with this portion of thetongue. The other passages open out through the front end of the tube.The plug is intended to fit in the front end of the resrevoir penholderor handle, and the pen is inserted between the handle or holder and theplug, with the front end of the tongue extending under the writing-pointof the pen.

In the drawings accompanying and forming part of this specification,Figure lis a longitudinal central section of the completed pen. Fig. 2is a perspective view of the plug detached. Figs. 3 and t areperspective views of the feeding-tongue and the tube detached from oneanother. Fig. 5 is a cross-section of the plug on line 5 5, Fig. 2.

The particular penholder A in connection with which my present inventionis illustrated is that which is the subject of United States LettersPatent No. 599,592, granted to my assignee, the Eagle Pencil Company, onFebruary 22, 1898; but the invention is of course applicable to otherpen holders or handles as may be held in the usual way between `thevplug and the handle.

The plug consists of the tube C and the tongue D, both of which arepreferably made of hard rubber. That portion of the tongue which fits inthe tube is of substantially triangular form in crosssection and lls allthe interior of the tube, save the three narrow spaces a b c, which formsmall longitudinal channels, through which ink and -air can pass fromand to the ink-reservoir in the handle. The side channels band c extendthrough the tube C from end to end. The top channel d stops at the frontshoulder m at the junction of that partof the tongue which fits in thetube with that pai-tnl of the tongue which eX- tends out in front of thetube and under the pen-point, this latter part n on its upper edge beingflush with the periphery of the tube; but said channel a communicateswith a slot a' formed in the part nof the tongue, by which the ink fromthe said channel can find its way out between the top of the tongue andthe pen. This slot a may be extended back into the body of the tongue,which forms (in conjunction with the surrounding tube) the channel a, asshownin Figfa, and, indeed, this slot may be extended back to the rearend of the tongue instead of stopping short of that end, as in Fig. 3.To further facilitate the free action of the pen, a slot d2, registeringwith slot d', is formed in the front portion of the tube C. The notchn', cut in the front end of the tube C, has no function other than tofurnish a guide by which the tongue may be accurately fitted to itsplace in the tube.

I find that With a device thus constructed the feed is measured,uniform, and certain and that no trouble is experienced from airbubbles.

What I claim herein as new, and desire to secure by Letters Patent, is-

l. An ink duct or feeder for fountain-pens consisting of a tube, and afeed-tongue having its forward portion n flush at top with the tube, andof triangular cross-section asto that part of it which fits within thetube,

forming` Within the tube three longitudinal channels, the top one ofwhich communicates at front With t slot formed in that portion of thetongue which lies under and n Contact with the pen, substantially ashereinbefore set forth.

2. An inkduct or feeder for fountain-pens consisting of the tube Cprovided with slot a2, and the feed-tongue D, provided with slot a', andhaving that portion of it which fits 1o Within the tube triangular incross-section, substantially as hereinbefore set forth.

In testimony whereof I have hereunto set my hand this 9th day ofNovember, 1898. l

CLAES WM. BGMAN. Titnessesz SAMUEL KRAUS, P. H. BUCKMASTER.

